75 years since massive temperature swing in Spearfish

SPEARFISH, S.D. (AP) — Monday marks the 75th anniversary of a startling weather event that put a western South Dakota city in the record books: In just two minutes, the temperature in Spearfish jumped from negative 4 degrees (-20 Celsius) to 45 degrees (7 Celsius) on Jan. 22, 1943.

The temperature then increased to 54 degrees (12 Celsius), only to fall back down that morning to negative 4 degrees (-20 Celsius), the Rapid City Journal reported .